I picked up a budget Squier acoustic on Sunday evening from ebay, Played around with it for an hour and was happy other than the fact it needed new strings. Yesterday evening I put on a set of 13's which is all I had but since then the action just seems a lot higher than when I first got it.
I'm guessing the original strings might have been a lower gauge and the neck is being pulled by the extra tension? Today I've looked up truss rod adjustments as I've never done any set up work before, and I've turned the rod a couple of quarter-turns anti-clockwise but it hasn't made much of a difference. From the second/third fret the string height just goes up and up.
What should I do to get it back to how it was? I'm pretty disappointed now with how high the action is as it makes it difficult to play. It played fine with the original strings!